A photoelectric detector is a device that is used to detect objects within a certain zone. The device can also be used to detect that the area is clear and some detectors can determine how far specific objects are. Photoelectric detectors use infrared light which is processed with a transmitter. Some devices also use a receiver but this is not needed in all set ups.
Photoelectric detectors are used in many different environments. One common example would be using the detector for a garage door to prevent closing the door when the path is not clear. Some vehicles are being equipped with a sensor to make backing up easier. This may prevent hitting a bicycle, kid, or whatever else may be in the way. A photoelectric detector could be used for this reason as well.
Using a Photoelectric Detector
There are a few different types of photoelectric detectors. The most common type would be the design that does not require a photoelectric receiver. This device is usually designed with a counting circuit that is built-in to the machine it is assisting. This addition would allow for a number of useful features and could be very beneficial if used in a factor assembly line.
A photoelectric detector could allow the assembly line to flow as it should, count the number of objects that pass a certain point, detect product defects, and more. You can also gather information from the results when using a photoelectric detector such as the speed at which the items are being manufactured. You could also use the photoelectric detector as a safety item as it can shut off the machines if any foreign objects are detected. The device could also get the machine to shut off if the objects are not being produced or something in the assembly line is malfunctioning. Many of these devices are also designed to shut down the machinery if the sensor is being completely blocked.
Another common use of a photoelectric detector that does not require a receiver is with automatic doors. An instance of this would be at a department store where the door has a sensor that detects someone in a close distance and automatically opens the door for them.
Photoelectric Detector for Security Reasons
A photoelectric detector can also be used as a major part of a security system. This could be a high tech infrared light security system or something simple. If the sensor beam is tripped it will cause the alarm to go off. This can occur if a person or animal crosses the sensor beam. If an object is thrown at the beam it could also cause the alarm to go off. These devices are often designed with a variety of sensitivity levels.
The photoelectric detector will work with a photoelectric receiver which is placed directly at the opposite side of the transmitter. The end result will be a sensor beam that is created between the transmitter and receiver. Once this beam is tripped it will cause a temporary break in the beam and the alarm will activate immediately. Another great benefit of this set up is that it can also work as a smoke detector. If smoke interferes with the sensor beam it can set off the alarm.
There are also variations to this type of photoelectric detector. If you wanted to make sure a prized possession is never stolen then you could create the reverse effect. For instance, if a valuable possession is stored at a museum in a display case it could be at risk of being stolen. You could create an alarm with the photoelectric detector by setting it up to alert you if the object between the transmitter and receiver gets moved. This is caused by the device sounding an alarm if there is no break in the sensor beam, but rather that the beam fully connects between the transmitter and receiver.
There are many different uses for a photoelectric detector and you can find various types of this device available. If you are looking to set up a machine that could benefit from using a photoelectric detector then you may want to read more on the subject. If you are setting up a security system then you could really benefit from purchasing this device. Just do some more research so you can learn about the technology behind the photoelectric detector and the products available for purchase.